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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
vulva
estrous
hormones
cow estrus cycle
2. (LH) stimulates the Leydig cells to produce testosterone
retractor muscles
Hard
Lutinizing Hormone in males
Where livelihood is in agriculture
3. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
kidney stones also called ________ ___________ can develop in the sigmoid flexure
growth lost from castration methods (knife & band)
hormones
Avg. bull specs
4. 30 hours after estrus begins
prostate gland
growth lost from castration methods (knife & band)
cow ovulation
effects of estrogen
5. Days which have increasing daylight hours
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6. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
rectal palpation (BSE)
oviducts
sow estrus
castration
7. 16-20 hours
dairy cattle pregnancy check
cow estrus
spermatogenesis
penis and prepuce observation (BSE)
8. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
libido test (BSE)
feeding a high producing dairy cow
effects of BST
sow estrus
9. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
estrous
retractor muscles
Hormones from both the fetus and the mom.
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
10. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
visual evaluation (BSE)
cow ovulation
rectal palpation (BSE)
things to check for in a breeding soundness exam (BSE)
11. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
pelvis
penis proper
urethra
Dairy Cattle Lactation (standard)
12. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
Follical Stimulating in males
rectal palpation (BSE)
seminiferous tubules
cervix
13. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
colostrum
Reasons for gestation length being affected
cow estrus cycle
oviducts
14. 1-3 days
Sperm growth rate
Follical Stimulating in females
van deferens
sow estrus
15. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
effects of BST
age and castration
penis sizes vs delivering methods
functions of progestrone
16. Allows extension of penis without fibro-elastic penis
Follical Stimulating in males
seminiferous tubules
libido test (BSE)
sigmoid flexure
17. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
uterus
sertoli cells
butterfat
scrotum
18. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
scrotal circumference (BSE)
Where livelihood is in agriculture
growth lost from castration methods (knife & band)
pelvis
19. (switzerland) 2nd in size and milk production - most muscle -
cremaster muscle
Brown Swiss Cow
kidney stones also called ________ ___________ can develop in the sigmoid flexure
penis and prepuce observation (BSE)
20. 45-60 days after breeding; re-breed as required
dairy cattle pregnancy check
cow estrus
normal presentation of the fetus
ewe gestation
21. Superior genes are _______ to multiply
Dairy calves are removed from cow at birth to...
cow gestation
visual evaluation (BSE)
Hard
22. The more stressed out the male is - the less sperm he is going to produce
mare's estrous cycle
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
dry-off time in dairy cattle
humans: stress level vs sperm
23. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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24. Urinary calculi.
libido test (BSE)
growth lost from castration methods (knife & band)
eminal vesicles
kidney stones also called ________ ___________ can develop in the sigmoid flexure
25. 336 days
rectal palpation (BSE)
mare gestation
dairy cattle pregnancy check
cow estrus
26. 16-20 hours
~1 month
butterfat
why does the cow need fat deposits during pregnancy?
cow estrus
27. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
penis sizes vs delivering methods
Reasons for gestation length being affected
mare ovulation
femininity of a heifer
28. 30 hours after estrus begins
cow ovulation
femininity of a heifer
sow gestation
mare ovulation
29. 114 days
rectal palpation (BSE)
penis and prepuce observation (BSE)
ewe's estrous cycle
sow gestation
30. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
dry matter and water
scrotal circumference (BSE)
epididymis: definition - 3 parts - 4 functions
libido test (BSE)
31. Animals which have only one estrous cycle (ex: dog - fox)
monestrous
reason for seasonal breeding periods
prostaglandin
sow ovulation
32. 2 month growth cycle. stored in the epididymis of the bull
Mares
Sperm growth rate
mare estrus
effects of estrogen
33. Start of the reproductive tract for the female. located outside of the body
van deferens
ewe's estrous cycle
vulva
cow gestation
34. What makes the milk flow through the mammary glands?
Sperm growth rate
estrous
Blood
reasons for castration
35. ~60 days before calving
effects of BST
dry-off time in dairy cattle
butterfat
ewe ovulation
36. 1-2 days
ewe estrus
seasonally polyestrous
reasons for castration
ewe gestation
37. 2 month growth cycle. stored in the epididymis of the bull
growth lost from castration methods (knife & band)
Sperm growth rate
sperm cell
dry-off time in dairy cattle
38. Help to signal hormone levels which we need both in the brain right next to each other.
semen evaluation (BSE)
hypothalamus and pituitary gland
semen evaluation (BSE)
sow gestation
39. 14-19 (17) days
ewe estrus cycle
ewe gestation
Culls bulls earlier (2 reasons)
sigmoid flexure
40. 4-6 days
cow gestation
Hard
sow estrus cycle
mare estrus
41. The more stressed out the male is - the less sperm he is going to produce
uterus
semen evaluation (BSE)
kidney stones also called ________ ___________ can develop in the sigmoid flexure
humans: stress level vs sperm
42. Birthing process (termination of gestation)
rectal palpation (BSE)
penis sizes vs delivering methods
Parturition
castration
43. (male) pushes the testes upward toward the body for warmth or protection
Dairy Cattle Gestation
dartos muscle
mare's estrous cycle
penis sizes vs delivering methods
44. Luteolysis happens because of the ____________ hormone
polyestrous
prostaglandin
Parturition
Avg. bull specs
45. (FSH) causes egg to mature in females
Avg. bull specs
mare's estrous cycle
Follical Stimulating in females
Lutinizing Hormone in females
46. Parturition is controlled by...
Hormones from both the fetus and the mom.
testis (gonads)
effects of BST
Blood
47. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
libido test (BSE)
cowper's gland
retractor muscles
Jersey Cow
48. 30-38 hours after estrus cycle begins
feeding a high producing dairy cow
hypothalamus and pituitary gland
4 major reasons for culling dairy cows
sow ovulation
49. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
Bull's fibro-elastic penis
effects of estrogen
cow gestation
6-8 weeks
50. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
stag
eminal vesicles
testis (gonads)
cow estrus